- 42 Up (1998)
- 42nd Street (1933)
- 44 Inch Chest (2009)
- 44 Minutes: The North Hollywood Shoot-Out (2003)
- 45 Years (2015)
- 46-okunen no koi (4.6 Billion Year Lov) (2006)
- 47 Meters Down (2017)
- 47 Meters Down: Uncaged (2019)
- 47 Ronin (2013)
- 48 Hrs. (1982)
- 49 Up (2005)
- 49th Parallel (1941)
- 4:44 Last Day on Earth (2011)
- 4Closed (2013)
- 4D Man (1959)
- 4Got10 (2015)
- 4Play (2014)